You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by "Carl Yeksigian (JIRA)" <ji...@apache.org> on 2015/03/27 16:32:53 UTC
[jira] [Assigned] (CASSANDRA-8051) Add SERIAL and LOCAL_SERIAL
consistency levels to cqlsh
[ https://issues.apache.org/jira/browse/CASSANDRA-8051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Carl Yeksigian reassigned CASSANDRA-8051:
-----------------------------------------
Assignee: Carl Yeksigian (was: Tyler Hobbs)
> Add SERIAL and LOCAL_SERIAL consistency levels to cqlsh
> -------------------------------------------------------
>
> Key: CASSANDRA-8051
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8051
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: Nicolas Favre-Felix
> Assignee: Carl Yeksigian
> Priority: Minor
> Labels: cqlsh
>
> cqlsh does not support setting the serial consistency level. The default CL.SERIAL does not let users safely execute LWT alongside an app that runs at LOCAL_SERIAL, and can prevent any LWT from running when a DC is down (e.g. with 2 DCs, RF=3 in each.)
> Implementing this well is a bit tricky. A user setting the serial CL will probably not want all of their statements to have a serial CL attached, but only the conditional updates. At the same time it would be useful to support serial reads. "WITH CONSISTENCY LEVEL" used to provide this flexibility.
> I believe that it is currently impossible to run a SELECT at SERIAL or LOCAL_SERIAL; the only workaround seems to be to run a conditional update with a predicate that always resolves to False, and to rely on the CAS response to read the data.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)